This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A122806 #3 Mar 30 2012 17:29:51 %S A122806 2,5,6,7,8,11,13,14,15,16,18,19,20,22,24,25,27,29,30,31,33,34,35,36, %T A122806 37,38,41,42,43,44,46,47,49,50,51,52,53,54,56,57,58,59,60,61,62,64,65, %U A122806 66,67,68,69,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90 %N A122806 Numbers not in A122804. %K A122806 nonn %O A122806 1,1 %A A122806 _Ray Chandler_, Sep 23 2006